由于鸡粪中含有胆固醇、雌激素等类固醇化合物，而这类化合物能够对人体造成危害，且在环境中不易被降解，因此有必要对鸡粪进行处理，米减少对环境的污染。

Because chicken feces contain steroids such as cholesterol and estrogen that are difficultly degraded in the environment and can hurt human, it is necessary to treat with them to reduce the pollution.

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